Journal
FOOD CHEMISTRY
Volume 120, Issue 4, Pages 1067-1075Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2009.11.054
Keywords
Antioxidant capacity; Asimina triloba; Crataegus sp.; Eriobotrya japonica; Fatty acids; Ficus carica; Organic acids; Phospholipids; Phytosterols; Polyphenols; Tocopherols; Underutilized fruits
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Four underutilized Georgia-grown fruit crops, namely loquat (Eriobotrya japonica), mayhaw (Crataegus sp.), fig (Ficus carica), and pawpaw (Asimina triloba), and their leaves were analysed for total polyphenols by Folin-Ciocalteau method, and antioxidant capacity by ferric-reducing antioxidant power (FRAP) and Trolox-equivalent antioxidant capacity (TEAC) assays. Organic acids and phenolic compounds were identified by RP-HPLC. For lipid profile, fruits were separated into two fractions - seed and fruit (i.e., without seed); lipid was extracted using the Folch method and analysed for fatty acids, phytosterols, tocopherols, and phospholipids. The major organic acid identified in all samples was malic acid (177-1918 mg/100g FW). The predominant phenolic acids in all the fruits were gallic (1.5-6.4 mg/100 g FW) and ellagic (0.2-33.8 mg/100g FW), and the most abundant flavonoid was catechin (12.2-37.8 mg/100 g FW). Total lipid content varied from 0.1% in mayhaw fruit to 21.5% in pawpaw seed. Linoleic acid was the predominant fatty acid in all of the samples (28.2-55.7%). (C) 2009 Published by Elsevier Ltd.
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